we are on the way - it´s already coming down in price for 3840x2160 pixel:
it´s "ONLY" 7999,-€
and here samsung:
Do you remember "Total recall" with Arnold Schwarzenegger. In the very beginning of this film he sits at breakfast in his kitchen with his (believed to be) wife Sharon Stone and the walls are the displays, to be switched to a television part or back to a landscape. look here:
We are on the way and it will not take so long. 50" Plasmas or LCD´s do cost 500 € now. In 5 Years 4k or 8k 100" screens will have the same price tag. This is mass production, a massive demand and a platform for future standard communication and media.
Greetings from Munich